CalcRover

Cumulative GPA Calculator

Enter your current cumulative GPA, the credits behind it, and this semester's courses — and get your new cumulative GPA. The steps show the quality-point arithmetic, so you can see exactly how much this semester moves the needle.

This semester's courses

Cumulative GPA formula

Your cumulative GPA is total quality points divided by total credits across everything you've taken. You don't need every old course: your current GPA × completed credits recovers the quality points you already have. Then add this semester's points and credits:

The more credits you accumulate, the harder the cumulative GPA is to move — 15 new credits shift a 90-credit record six times less than they shift a 15-credit one. That's also why averaging semester GPAs directly is wrong unless every semester has identical credits.

prior points = current GPA × completed credits
new cumulative = (prior points + semester points) ÷ (all credits)

Worked examples

Example 1: adding a strong semester

Current GPA 3.24 over 9 credits; this semester: A (3 cr), A− (4 cr), B+ (4 cr), A (4 cr).

  1. Recover prior quality points.
    3.24 × 9 = 29.16
  2. Semester points.
    12 + 14.8 + 13.2 + 16 = 56 over 15 credits (semester GPA 3.73)
  3. Combine.
    (29.16 + 56) ÷ (9 + 15) = 85.16 ÷ 24 = 3.55

New cumulative GPA: 3.55.

Example 2: why averaging semester GPAs fails

GPA 4.0 over 30 credits, then a 3.0 semester over 6 credits.

  1. Quality points.
    4.0 × 30 = 120; 3.0 × 6 = 18
  2. Combine.
    138 ÷ 36 = 3.83

3.83 — not the 3.5 a straight average would suggest, because the 30 credits outweigh the 6.

Example 3: what semester GPA gets me to 3.5?

Cumulative 3.3 over 60 credits, 15 credits this semester. Needed semester GPA for a 3.5 cumulative?

  1. Points needed in total for 3.5 over 75 credits.
    3.5 × 75 = 262.5
  2. Points already held.
    3.3 × 60 = 198
  3. The semester must supply the rest.
    (262.5 − 198) ÷ 15 = 4.3

You'd need a 4.3 semester — impossible on an unweighted 4.0 scale, so 3.5 isn't reachable this semester.

FAQ

Where do I find my completed credits and current GPA?+

On your transcript or student portal — look for "GPA hours" or "credits attempted toward GPA" rather than "credits earned": pass/fail and transfer credits often don't carry grade points and shouldn't be entered here.

Do retaken courses count twice?+

Depends on the school's repeat policy. Some replace the old grade entirely, others average both attempts, and some keep both on the record. If your school replaces grades, remove the old attempt from your prior GPA before combining.

Does this work for high school as well as college?+

Yes — the quality-point math is identical. Use your school's credit units (semesters, trimesters, or Carnegie units), and note that weighted AP/honors scales (up to 5.0) need the weighted grade points, not the standard 4.0 ones.

Why did my GPA barely move after a perfect semester?+

Credit inertia: with 100 credits at 3.0, a 4.0 semester of 15 credits only lifts you to 3.13. Early semesters are the cheapest time to build GPA.

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